<template>
  <div class="login_container">
    <div class="login_box">
      <!--  头像框  -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="">
      </div>
      <!--  表单    -->
      <div>
        <!--绑定对象-->
        <el-form ref="LoginFormRef" :model="LoginForm" :rules="LoginFormRules" class="login_form">
          <!--  username  -->
          <el-form-item prop="username">
            <el-input v-model="LoginForm.username"  prefix-icon="el-icon-user"></el-input>
          </el-form-item>
          <!--  password  -->
          <el-form-item prop="password">
            <el-input v-model="LoginForm.password"  prefix-icon="el-icon-lock" type="password"></el-input>
          </el-form-item>
          <el-form-item class="btns">
            <el-button type="primary" @click="login">登录</el-button>
            <el-button  type="info" @click="resetLoginForm">重置</el-button>
          </el-form-item>
        </el-form>
      </div>
    </div>
  </div>
</template>

<script>
export default {
  data(){
    return {
      //表单的数据绑定对象
      LoginForm: {
        username: 'admin',
        password: '123456'
      },
      //表单的验证规则对象
      LoginFormRules:{
        //验证用户名是否合法
        username:[
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        //验证密码是否合法
        password:[
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods:{
    //预验证
    login(){
      this.$refs.LoginFormRef.validate(async valid =>{
        if (!valid) return;
        const { data:res } = await this.$http.post('login',this.LoginForm);
        if(res.meta.status !== 200) return this.$message.error('登录失败');
        this.$message.success('登录成功');
        console.log(res);
        //把token保存到session里
        window.sessionStorage.setItem('token',res.data.token);
        //push强制跳转
        this.$router.push('/home')
      })
    },

    //点击重置按钮，重置表单
    resetLoginForm(){
      //console.log(this)
      this.$refs.LoginFormRef.resetFields();
    }


  }
}
</script>


<style Lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.avatar_box{
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #fff;
}

img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: #eee;
}

.login_form{
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns{
  display: flex;
  justify-content: flex-end;
}
</style>